Diarrhea is a common symptom of many clinical diseases. Diarrhea can be classified into acute diarrhea and chronic diarrhea according to the duration of diarrhea. Common classification 1, acute diarrhea: If the duration of diarrhea symptoms is less than 3 weeks, it is considered acute diarrhea. Acute diarrhea is often accompanied by abdominal pain, of which infectious diarrhea is the most common. Common intestinal infection pathogens include viruses such as rotavirus and norovirus, bacteria such as Escherichia coli and Campylobacter jejuni, fungi such as Candida and Aspergillus, and parasites such as Giardia lamblia and Amoeba protozoa; 2. Chronic diarrhea: If the duration of diarrhea is greater than 3 weeks, it is chronic diarrhea. irritable bowel syndrome, intestinal dysbiosis, inflammatory bowel disease, intestinal tumors, chronic hepatitis, liver cancer, hyperthyroidism, etc. Treatment If the symptoms are mild, medications such as antidiarrheal drugs like montelukast or micro-ecological preparations like Lactobacillus, Bifidobacterium and Typhimurium can be used to regulate the intestinal flora and relieve diarrhea as prescribed by doctors. If the symptoms are severe, anti-infective treatment with aminoglycosides or quinolones antibiotics or broad-spectrum anthelmintics such as albendazole tablets can be applied under the guidance of the doctor to treat diarrhea caused by parasitic infections. Caution If patients develop diarrhea, they need to go to the hospital promptly for further examination of stool routine and blood routine to understand the cause of diarrhea and treat the cause. Pay attention to dietary hygiene on a daily basis and actively treat primary diseases, if any.